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JAMB Biology 2011 Question 23

Question 23

Plant Responses and Hormones

The movement response of a cockroach away from a light source can be described as

  1. A.negative phototropism
  2. B.positive phototropism
  3. C.positive phototaxism
  4. D.negative phototaxism.
Show the answer and explanation

Answer: D (negative phototaxism.)

Explanation

When a whole organism moves towards or away from a stimulus, it is a taxis. The cockroach moves away from light, so it is negative phototaxis.